include/alloca.h

   1 /*
   2  * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 #ifndef _ALLOCA_H_
  25 #define _ALLOCA_H_
  26
  27 #include <sys/cdefs.h>
  28 #include <_types.h>
  29 #include <sys/_types/_size_t.h>
  30
  31 __BEGIN_DECLS
  32 void    *alloca(size_t);                /* built-in for gcc */
  33 __END_DECLS
  34
  35 #if defined(__GNUC__) && __GNUC__ >= 3
  36 /* built-in for gcc 3 */
  37 #undef  alloca
  38 #undef  __alloca
  39 #define alloca(size)    __alloca(size)
  40 #define __alloca(size)  __builtin_alloca(size)
  41 #endif
  42
  43 #endif /* _ALLOCA_H_ */